/*
 * Copyright (c) 2008 VMware, Inc.
 * Copyright (c) 2009 John Pritchard, WTKX Project Group
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package wtkx.wtk;

import wtkx.MenuBar;
import wtkx.MenuBarItem;
import wtkx.collections.Sequence;

/**
 * Menu bar listener interface.
 *
 * @author gbrown
 */
public interface MenuBarListener {
    /**
     * Called when a menu bar item has been inserted.
     *
     * @param menuBar
     * @param index
     */
    public void itemInserted(MenuBar menuBar, int index);

    /**
     * Called when menu bar items have been removed.
     *
     * @param menuBar
     * @param index
     * @param removed
     */
    public void itemsRemoved(MenuBar menuBar, int index, Sequence<MenuBarItem> removed);

    /**
     * Called when the menu bar's active state has changed.
     *
     * @param menuBar
     */
    public void activeChanged(MenuBar menuBar);
}
